100G 40KM transceiver QSFP28 SR4 fiber optical module

100G 40KM transceiver QSFP28 SR4 fiber optical module

Tags: 100G transeiver, QSFP28 transceiver, fiber module, SFP module, SFP optical module

Description
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100G 40KM transceiver QSFP28 SR4 fiber optical module

100G 40KM transceiver FEATURES

Up to 27.952 Gbps Data rate per channel
Maximum link length of 100m links on OM3 multimode fiber
High Reliability 850nm VCSEL technology
Electrically hot-pluggable
Digital diagnostic SFF-8436 compliant
Compliant with QSFP28 MSA
Case operating temperature range:0°C to 70°C
Power dissipation < 2.5 W

APPLICATIONS

Data center
Infiniband QDR
Fiber channel

STANDARD

Compliant to IEEE 802.3 bm
Compliant to SFF-8436
RoHS Compliant.

General Description

100G 40KM transceiver is designed for use in 100 Gigabit per second links over multimode fiber. They are compliant with the QSFP28 MSA and IEEE 802.3bm

QSFP28 SR4 transceiver portion of the transceiver incorporates a 4-channel VCSEL (Vertical Cavity Surface Emitting Laser) array, a 4-channel input buffer and laser driver, diagnostic monitors, control and bias blocks. For module control, the control interface incorporates a Two Wire Serial interface of clock and data signals. Diagnostic monitors for VCSEL bias, module temperature,received optical power and supply voltage are implemented and results are available through the TWS interface. Alarm and warning thresholds are established for the monitored attributes. Flags are set and interrupts generated when the attributes are outside the thresholds. Flags are also set and interrupts generated for loss of input signal (LOS) and transmitter fault conditions. All flags are latched and will remain set even if the condition initiating the latch clears and operation resumes. All interrupts can be masked and flags are reset by reading the appropriate flag register. The optical output will squelch for loss of input signal unless squelch is disabled. Fault detection or channel deactivation through the TWS interface will disable the channel. Status, alarm/warning and fault information are available via the TWS interface.

SFP28 transceiver optical receiver portion of the transceiver incorporates a 4-channel PIN photodiode array, a 4-channel TIA array, a 4 channel output buffer, diagnostic monitors, and control and bias blocks. Diagnostic monitors for optical input power are implemented and results are available through the TWS interface. Alarm and warning thresholds are established for the monitored attributes. Flags are set and interrupts generated when the attributes are outside the thresholds. Flags are also set and interrupts generated for loss of optical input signal (LOS). All flags are latched and will remain set even if the condition initiating the flag clears and operation resumes. All interrupts can be masked and flags are reset upon reading the appropriate flag register. The electrical output will squelch for loss of input signal (unless squelch is disabled) and channel de-activation through TWS interface. Status and alarm/warning information are available via the TWS interface.

Ⅰ Absolute Maximum Ratings

Parameter	Symbol	Min.	Typ.	Max.	Unit	Note
Storage Temperature	Ts	-40	–	85	ºC
Storage Ambient Humidity	HA	5	–	95	%
Operating Relative Humidity	RH	–	–	85	%
Power Supply Voltage	VCC	-0.3	–	4	V
Signal Input Voltage		Vcc-0.3	–	Vcc+0.3	V
Damage threshold		3.4			dBm

Ⅱ Recommended Operating Conditions

Parameter	Symbol	Min.	Typ.	Max.	Unit	Note
Case Operating Temperature	Tcase	0	–	70	ºC	Without air flow
Power Supply Voltage	VCC	3.14	3.3	3.47	V
Power Supply Current	ICC	–		350	mA
Data Rate	BR		10.3125		Gbps	Each channel
Transmission Distance	TD		–	100	m	OM3 MMF
				150	m	OM4 MMF

Ⅲ Optical Characteristics

Parameter	Symbol	Min	Typ	Max	Unit	NOTE
Transmitter
Center Wavelength	λ0	840		860	nm
Average Launch Power each lane		-7.6		-1	dBm
Spectral Width (RMS)	σ			0.65	nm
Optical Extinction Ratio	ER	3			dB
Average launch Power off each lane	Poff			-30	dBm
Transmitter and Dispersion Penalty each lane	TDP			3.5	dB
Optical Return Loss Tolerance	ORL			12	dB
Output Eye Mask	Compliant with IEEE 802.3ba
Receiver
Receiver Wavelength	Λin	840		860	nm
Rx Sensitivity per lane	RSENS			-9.5	dBm	1
Input Saturation Power (Overload)	Psat	2.4			dBm
Receiver Reflectance	Rr			-12	dB
LOS De-Assert	LOSD			-12	dBm
LOS Assert	LOSA	-30			dBm
LOS Hysteresis		0.5			dBm

Notes:
1. Measured with a PRBS 231-1 test pattern, @10.325Gb/s, BER<10-12 .

IV. Electrical Characteristics

Parameter	Symbol	Min	Typ	Max	Unit	NOTE
Supply Voltage	Vcc	3.14	3.3	3.46	V
Supply Current	Icc			350	mA
Transmitter
Input differential impedance	Rin		100		Ω	1
Differential data input swing	Vin,pp	180		1000	mV
Single ended input voltage tolerance	VinT	-0.3		4.0	V
Receiver
Differential data output swing	Vout,pp	300		850	mV	2
Single-ended output voltage		-0.3		4.0	V